Cat’s 637 Wheel Tractor-Scraper is engineered to conquer challenges operators face worldwide. With its strength and durability, it works in some of the most difficult conditions and materials one can find.
Features
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Be More Productive
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Work in Comfort
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Designed for Safety
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Easy to Operate
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Integrated Cat Technologies
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Execute Efficiency
Specifications
Units for specifications
General
| Scraper Capacity - Struck | 24 yd³ 18.3 m³ |
|---|---|
| Width - Cut | 11.50 ft 3.51 m |
| 180° Curb-to-Curb Turning Width | 40.12 ft 12.23 m |
| Fuel Tank Refill Capacity - Scraper | 370 gal (US) 1400 l |
| Scraper Capacity - Heaped | 34 yd³ 26 m³ |
| Overall Width | 12.93 ft 3.94 m |
| Top Speed - Loaded | 34.7 mile/h 55.8 km/h |
| Overall Shipping Height | 13.62 ft 4.15 m |
| Maximum Depth of Cut | 17.7 in 450 mm |
| Tires - Tractor | 37.25R35**E3 |
| Maximum Depth of Spread | 21.1 in 535 mm |
| Tires - Scraper | 37.25R35**E3 |
| Rated Load | 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons) |
Engine
| Rated Engine RPM - Tractor | 1900 r/min 1900 r/min |
|---|---|
| Engine Model - Scraper | Cat C9.3 |
| Engine Model - Tractor | Cat C18 |
| Flywheel Power - Scraper | 290 hp 216 kW |
| Rated Engine RPM - Scraper | 2150 r/min 2150 r/min |
| Flywheel Power - Tractor | 570 hp 425 kW |
| Emissions | Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards. |
Tractor Engine
| Flywheel Power - Tractor/Scraper | 570 hp 425 kW |
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Scraper Bowl
| Scraper Capacity - Heaped | 34 yd³ 26 m³ |
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Transmission
| Top Speed - Loaded | 34.7 mile/h 55.8 km/h |
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Service Refill Capacities
| Hydraulic System | 37.5 gal (US) 142 l |
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| Crankcase - Tractor | 13.7 gal (US) 52 l |
| Diesel Exhaust Fluid - Tractor | 8 gal (US) 30.5 l |
| Diesel Exhaust Fluid - Scraper | 5.8 gal (US) 22 l |
| Transmission System - Scraper | 12.9 gal (US) 49 l |
| Fuel Tank | 370 gal (US) 1400 l |
| Cooling System - Scraper | 16.1 gal (US) 61 l |
| Crankcase - Scraper | 6.5 gal (US) 24.5 l |
| Cooling System - Tractor | 19.8 gal (US) 75 l |
| Transmission System - Tractor | 29 gal (US) 110 l |
Dimensions
| Front of Tractor to Front Axle | 142.2 in 3612 mm |
|---|---|
| Axle to Vertical Hitch Pin | 20 in 509 mm |
| Wheel Base | 346.8 in 8808 mm |
| Rear Axle - Rear of Machine | 90.2 in 2292 mm |
| Length - Maximum (Push-Pull) | 655.1 in 16640 mm |
| Width - Overall Machine | 155 in 3937 mm |
| Width - Rear Tire Centers | 96.9 in 2462 mm |
| Extended Push Block (Push-Pull) | 108 in 2744 mm |
| Width - Outside Rear Tires | 143.2 in 3636 mm |
| Width - Inside of Bowl | 134 in 3404 mm |
| Height - Scraper Blade Maximum | 20 in 510 mm |
| Ground Clearance - Tractor | 26.1 in 664 mm |
| Width - Tractor | 137.8 in 3499 mm |
| Length - Overall Machine - Standard | 597 in 15164 mm |
| Height - Overall Shipping | 163.2 in 4145 mm |
| Height - Top of Cab | 147 in 3733 mm |
Non Push-Pull
| Operating Weight - Empty | 114950 lb 52140 kg |
|---|---|
| Overall Length | 49.34 ft 15.04 m |
Push-Pull
| Overall Length - With Bail Down | 54.59 ft 16.64 m |
|---|---|
| Operating Weight - Empty | 119060 lb 54005 kg |
Cab
| Exterior Sound Level | The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A). |
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| ROPS/FOPS | ROPS/FOPS meet “ISO Standards.” |
Safety Criteria Compliance Standards
| Reverse Alarm | ISO 9533:2010 |
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| Brakes | ISO 3450:2011 |
| Falling Object Protective Structure (FOPS) | ISO 3449:2005 Level II |
| Rollover Protection Structure (ROPS) | ISO 3471:2008 for up to 21 282 kg (46,919 lb) |
| Seat Belt | SAE J386:FEB2006 |
| Steering System | ISO 5010:2007 |
Travel Speeds - Runout
| Transmission Gear - Reverse | 6.2 mile/h 9.9 km/h |
|---|---|
| Transmission Gear - Second | 6.2 mile/h 10.0 km/h |
| Transmission Gear - First | 3.4 mile/h 5.5 km/h |
| Transmission Gear - Seventh | 25.7 mile/h 41.95 km/h |
| Transmission Gear - Sixth | 19.0 mile/h 30.6 km/h |
| Transmission Gear - Fourth | 10.5 mile/h 16.9 km/h |
| Transmission Gear - Third | 7.7 mile/h 12.4 km/h |
| Transmission Gear - Fifth | 14.1 mile/h 22.7 km/h |
| Transmission Gear - Eighth | 34.7 mile/h 55.8 km/h |
Implement Cycle Times
| Bail Lower | 2.1 s 2.1 s |
|---|---|
| Apron Lower | 3.8 s 3.8 s |
| Apron Raise | 4.0 s 4.0 s |
| Bowl Lower | 3.5 s 3.5 s |
| Bowl Raise | 3.5 s 3.5 s |
| Ejector Retract | 8.5 s 8.5 s |
| Bail Raise | 1.5 s 1.5 s |
| Ejector Extend | 8.5 s 8.5 s |
Standard Equipment
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
POWER TRAIN – TRACTOR
- Cat C18 engine with MEUI™
- Compression engine brake
- Electric start, 24V
- Air cleaner, dry type with precleaner
- Fan, hydraulic
- Ground level engine shutdown
- Radiator, aluminum unit core, 9 fins per inch
- Guard, crankcase
- Starting aid, ether
- Braking system:
- Primary and secondary, wet disc, hydraulic actuated
- Parking, hydraulic-released, spring-applied
- Throttle lock
- Transmission:
- 8-speed planetary power shift
- ECPC control
- APECS software
- Programmable top gear selection
- Transmission hold
- Differential lock
- Guard, power train
- Standard tire spin reduction
- Ground speed control
- Machine speed limit
- Differential lock protection
POWER TRAIN – SCRAPER
- Cat C9.3 engine:
- High pressure common rail fuel
- Constant lift engine brake
- Electric start, 24V
- Air cleaner, dry type with precleaner
- Fan, mechanical driven
- Ground level engine shutdown
- Radiator, aluminum unit core, 9 fins per inch
- Starting aid, either
- Braking system:
- Primary and secondary, dry caliper, hydraulic actuated
- Transmission:
- 4-speed (torque converter drive)
- Planetary power shift
ELECTRICAL – TRACTOR
- Alternator, 150 Amp
- Batteries (4), 12V, 1,000 CCA, maintenance free, high output
- Electrical system, 24V
- Lighting system:
- Headlights, LED
- Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
- Starting/charging receptacle
ELECTRICAL – SCRAPER
- Alarm, backup
- Batteries (4) 12V, 1,000 CCA, maintenance free, high output
- Alternator, 65 Amp
- Electrical system, 24V
- Lighting system:
- Brake lights, LED
- Turn signals with hazard function, LED
OPERATOR ENVIRONMENT – TRACTOR
- HVAC system, heat, AC, defrost
- Thermostat control of HVAC system
- Coat hook
- Lunchbox platform with holding strap
- Diagnostic connection (2)
- 12V power ports (2)
- Differential lock (1)
- Dome courtesy light
- Horn, electric
- T-Handle implement control
- Mirror, rearview
- Radio ready
- ROPS/FOPS cab, pressurized
- Keypad switches:
- Throttle lock
- Wipers/washers
- Hazard lights
- Retarding level select
- Work lights on, off
- Information mode on Messenger Display
- Safety tab rocker switches
- Seat belt, static two-piece
- Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
- Steering wheel, tilt, telescoping, padded
- Windows, right side emergency egress
- Windows, sliding
- Windows, laminated, zipped in
- Windshield wipers, front and rear windows, includes washers
- Door lock
- Messenger Display
- Gauges, warnings include:
- Coolant temperature
- Engine oil temperature
- Hydraulic oil temperature
- Diesel Particulate Filter (DPF) temperature
- Fuel level
- Park brake
- Implement lockout
- Brake system
- Regeneration required
- Throttle lock
- System voltage
- Secondary steering
- Bail down
- Ejector auto
- Differential lock
- Apron float
- Transmission hold
- Cushion hitch
- High beam lights
- Action lamp
- Engine speed, rpm
- Gear selection
- DEF fill levels
FLUIDS
- Extended Life Coolant to –37° C (–34° F)
OTHER STANDARD EQUIPMENT – TRACTOR
- Advanced cushion hitch
- Accumulators (cushion hitch) with Canadian Registration Number (CRN)
- Fast oil change
- Fenders, non-metallic
- Heater, engine coolant 120V
- Rims (2)
- Tow hooks, front
- Vandalism locks
- Heater, engine coolant 120V
- Steering locks
OTHER STANDARD EQUIPMENT – SCRAPER
- Bowl:
- 18.3 m3 (24 yd3), struck
- 26 m3 (34 yd3), heaped
- Vandalism locks
- Scraper fenders
- Overflow guard
- Fast oil change
- Rims (2)
- Hydraulic position sensing cylinders (bowl lift and apron)
Optional Equipment
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
STEERING ARRANGEMENTS
- Secondary Steering Arrangement
INTEGRATED TECHNOLOGIES
- Sequence Assist Arrangement with Payload Estimator
- Load Assist
- Cat Grade Control with Load Assist
- Advanced Tire Spin Reduction
OTHER ATTACHMENTS
- Camera arrangement – Work Area Vision System (WAVS)
- Cab beacon
- Air horn
- Air horn and beacon
- Wiring group
- Push Pull
SERVICE INSTRUCTIONS
- Film arrangement – U.S. (ANSI)
- Film arrangement – International (ISO)
Videos
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